[PATCH] arm64: fix strlen() with CONFIG_KASAN_HW_TAGS

[Will Deacon]

On Mon, 12 Jul 2021 10:00:43 +0100, Mark Rutland wrote:
> When the kernel is built with CONFIG_KASAN_HW_TAGS and the CPU supports
> MTE, memory accesses are checked at 16-byte granularity, and
> out-of-bounds accesses can result in tag check faults. Our current
> implementation of strlen() makes unaligned 16-byte accesses (within a
> naturally aligned 4096-byte window), and can trigger tag check faults.
> 
> This can be seen at boot time, e.g.
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: fix strlen() with CONFIG_KASAN_HW_TAGS
      https://git.kernel.org/arm64/c/5f34b1eb2f8d

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev